add an example of impurity

This commit is contained in:
Raine Virta 2015-09-20 17:43:13 +03:00
parent f2e95693ca
commit 26ee327775

View file

@ -86,6 +86,17 @@ greet.toUpperCase(); // YO;
greet // yo;
```
As opposed to:
```js
let numbers = [1, 2, 3];
numbers.splice(0); // [1, 2, 3]
numbers // []
```
---
## Side effects